Mohsin Hayat Resume

Senior Software Engineer specializing in Applied AI and Backend Systems

Lahore, Pakistan · mohsinhayat104@gmail.com · GitHub · LinkedIn

Summary

Senior Software Engineer with 6+ years of international remote experience building production backend and applied AI systems across airline, ecommerce, and healthcare platforms. I focus on dependable services, useful agents, and the data and workflows around them.

I’m a confident, curious engineer who learns something new every day. The tools listed here reflect my experience so far, not the limits of what I can build or learn. I choose technologies to fit the problem and enjoy getting comfortable with unfamiliar systems.

Core skills

Languages: Python, TypeScript, JavaScript, SQL

Applied AI: LangGraph, LangChain, NL-to-SQL, RAG, model routing, OpenAI API, Anthropic Claude, Pinecone

Backend and data: Node.js, FastAPI, Express.js, GraphQL, REST, PostgreSQL, MongoDB, ArangoDB, ClickHouse, Redis

Cloud and architecture: AWS, GCP, Docker, Kubernetes, GitHub Actions, GitLab CI/CD, microservices, event sourcing, CQRS

Experience

OnService.AI · Senior Software Engineer

July 2026 – Present · Remote (United States)

Building production conversational AI experiences for World2Fly and LASER Airlines across Python services, LLM agents, and airline booking workflows.
Integrating conversational agents with KIU PSS and related airline workflows for booking information, payments, check-in, flight changes, ancillary services, and passenger support.

Trafilea Tech E-commerce Group · AI Engineer

June 2025 – July 2026 · Remote (United States)

Built a production NL-to-SQL agent used by leadership and marketing teams to query campaign data across 30+ tables in plain English, with schema-aware retrieval, table allowlists, date-bound queries, structured outputs, and validation checks.
Architected a three-level hierarchical LangGraph budget copilot reasoning in the context of approximately $5M/month in advertising spend across brands, countries, and channels.
Built an AI ingestion pipeline from AWS SNS through SQS to ClickHouse for multi-gigabyte advertising datasets and long-running LangGraph recommendation workflows.

Awell Health · Senior Software Engineer

April 2021 – May 2025 · Remote (Belgium)

Owned core APIs across orchestration, task management, and workflow design, helping scale the platform to 100K+ clinical workflows per month.
Designed event-driven systems using CQRS, added 100+ Cypress end-to-end tests, helped reduce deployment time by about 50%, and contributed to hosted-pages, ui-library, and awell-extensions.

Public work: hosted-pages, ui-library, awell-extensions.

Earlier experience

Tintash, Software Engineer (July 2020 – April 2021) · Built full-stack interactive and booking products with Node.js and React.

SolutionInn, Web Developer Intern (June 2019 – October 2019) · Built real-time tutoring features across Node.js, React, Socket.io, PHP, MySQL, and iOS.

Respond.io (formerly Rocketbots Limited), Frontend Developer Intern (July 2018 – September 2018) · Built Vue and Vuex product features, a Preact webchat plugin, Socket.io integrations, and Node.js APIs.

Upwork & Fiverr, Freelance Product Engineer (July 2016 – September 2018) · Delivered 15+ MVPs for international clients and achieved Top Rated status on Upwork.

Education and achievements

Bachelor of Science in Computer Science, National University of Computer and Emerging Sciences (FAST-NUCES), Lahore, Pakistan (2016–2020).

FAST-NUCES Bronze Medalist and Dean’s List honoree
First place in an ACM programming competition
11th place at ICPC Asia Regionals 2019
Delivered 15+ MVPs and achieved Top Rated status on Upwork

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